Thus no 200 mph Crossfires...yet!

Also keep in mind the speedo is not accurate (its optimistic) and will get further off the faster you go - Mine is off 3 mph at 60, so it would be off 6-7 at 120, and so on...however if you saw 180 on the speedo, that should still be a respectable 170 ish actual! I believe you will run out of rpm long before...probably by 170 ish.

Just be careful and don't get caught!! I guess then you would have proof of your top speed then, but I know here in oregon speeds like that are a FELONY and end up in immediate jail time!!!